Quick question about crafting

Can i obtain fiery brimstone from salvaging (high) lvl blues, rares and low lvl legendaries?
Is single set plan contains all of items in it? Just curious.

I thought it will be cool purchase just plan from ah, and then farm the rest. Some motive for farm. I have few low lvl legendaries, but checked official guide and it says, that salvaging low lvl legendaries 100% will give else material, not brimstones...

Brimstones come 100% from legendaries that require level 60 to equip. I believe there is a 1% chance of them coming from blues and yellows that are lvl 61+

From my own personal experience, the number is probably closer to 0.5%

Anyway, you don't want to craft anything right now. When you play anything past Act 2 MP0 (and all of MP1+) every item you find has it's affixed rolled from the level 63 range. Craft items don't currently go any higher than 62. I think myself and everyone else are saving Brimstones for the inevitable crafting patch coming who-knows-when.

Crafted gear is awesome in lower levels. Especially when you are just starting out and/or don't want to drop out of the game to AH every 5 levels. It very quickly drops off tho. Any Hellfire ring makes equipment unnecessary when leveling alts too... I have a WD that's level 15 literally needs nothing but the Int HF ring to one shot everything on Normal MP10